WGA 7300 Internal Wastegate Actuator for Lancer RalliartDesigned to bolt on to Mitsubishi Lancer Ralliart models with the factory turbo The WGA is a high performance internal wastegate actuator designed to improve boost control on internally wastegated turbos. By using a significantly larger diaphragm area than the OEM actuator, the WGA has more control authority over the wastegate flap, meaning exhaust backpressure cannot override the flap position as easily, resulting in more stable and reliable boost